Update:The error message my mail client receives is as follows: "lmtp:+51c0564a95aa31a8840305bec77e9023baa46477"@Domain.TLD *User doesn't exist: lmtp:@Domain.TLD* (in reply to RCPT TO command)and "lmtp:[127.0.0.1]:8024"@Domain.TLD (expanded from l...@list.tld): host Domain.TLD[private/dovecot-lmtp] said: 550 5.1.1 "lmtp:[127.0.0.1]:8024"@Domain.TLD User doesn't exist: lmtp:[127.0.0.1]:8...@domain.tld (in reply to RCPT TO command)------------------------The first example above came as a result of a suggestion by Kai that my transport map was incorrect. Specifically, he suggested that I could remove the port specification and that mailman3 is operating on a socket. However, Mailman3 does not use a socket - nonetheless I tried. The result was the same.*Despite the directive for Postfix to use the LMTP Transport *(either via lmtp or the mailman3 alias - I have configured for both), *it still uses the dovecot-lmtp and ignores the mailman lmtp.* Furthermore, it places the mailman lmtp into the address TO space, rather than utilizing the mailman3 transport method.I'm at a loss for what is going on here...
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